So I'd told them to put in the oil first, and add the herb later, to avoid mounds of barely oily dried herb in that bowl.
Dunno what this group did, but they had a mound of dried calendula flowers in the bowl, with the oil coming up to a little more than half of it.
That's bad if you don't have any more oil to add to the herb.
It's good if you do have the oil needed to cover the herb, if you actually need that particular herbal oil.
They added more oil - it's easy to find a use for a little more calendula oil.

I) Chickweed oil5 dl cold-pressed organic sesame oil
100 g fresh chickweed
a pinch of sodium benzoate
Let sit on a waterbath for 1.5 hours, let cool, strain by wringing oil'n'herb through cheesecloth. They got 5.5 dl of their infused herbal oil, which included water, which is why there's more liquid than the oil they started with - and which is why the sodium benzoate.